<?php
/**
 * Copyright (c) 2010, Slawomir Mazur <mazursllawek@gmail.com>
 * 
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions 
 * are met:
 * 
 * o Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer.
 * o Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * o Neither the name of the Softisland nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/**
 * Enter description here...
 *
 * @package     User
 * @copyright   Slawomir Mazur (c) 2010 (http://www.zend.com/zce.php?c=ZEND011643)
 * @license     http://www.opensource.org/licenses/bsd-license.php
 * @author      Slawomir Mazur <mazursllawek@gmail.com>
 */

abstract class User_Model_Abstract extends Zend_Db_Table_Abstract
{
	protected $_encryptor = null;
	
	abstract public function login($login, $password);
	
	public function asRowObject()
    {
    	unset($this->_user->password);
    	return (object) $this->_user->toArray();
    }
	
	public function validatePassword($password)
    {
    	if (!$hash = $this->_user->password) {
    		return false;
    	}
    	
    	return $this->_getEncryptor()->validateHash($password, $hash);
    }
    
	/**
     * Set plain and hashed password
     *
     * @param string $password
     * @return Mage_Customer_Model_Customer
     */
    public function getPassword($password)
    {
        return $this->hashPassword($password);
    }

    /**
     * Hach customer password
     *
     * @param   string $password
     * @return  string
     */
    public function hashPassword($password, $salt=null)
    {
    	return $this->_getEncryptor()->getHash($password, !is_null($salt) ? $salt : 2);
    }
    
	/**
     * Retrieve random password
     *
     * @param   int $length
     * @return  string
     */
    public function generatePassword($length=6)
    {
        return substr(md5(uniqid(rand(), true)), 0, $length);
    }
    
    protected function _getEncryptor()
    {
    	if (is_null($this->_encryptor)) {
    		$this->_encryptor = new Gp_Core_Encryption(); 
    	}
    	return $this->_encryptor;
    }
    
    /**
     * Send email with new password
     * 
     * @param $user
     * @param $password
     */
    public function sendEmailWithPassword(Zend_Db_Table_Row_Abstract $user, $password)
    {
    	$to      = $user->email; // Send email to our user
		$subject = 'New passsword'; // Give the email a subject
		$message =<<<EOD
		
		Thank you for interesting in RNAi Atlas system</strong><br />
		<div>
		Your account was created and activated. You can login by using credentails below.
		<pre>
------------------------
Login: {$user->email}
Password: {$password}
------------------------
		</pre>
		</div>
		
		Click link below to login to RNAi Atlas system:<br /><br />
		
		<a href="http://rnaiatlas.ethz.ch/user/auth/l/{$user->email}">Login<a/><br /><br />
		
		Or paste this url in to your browser:<br /><br />
		
		http://rnaiatlas.ethz.ch/user/auth/login/l/{$user->email}
EOD;

		$mail = new Zend_Mail('utf-8');		
		$mail->setBodyHtml($message)
			->setFrom('noreplay@rnaiatlas.ethz.ch', 'RNAi Atlas')
			->addTo($user->email, 'User')
			->setSubject('New password')
			->send();
    }
}